JP7412936B2 - Telephone system, control server and its control method - Google Patents

Description

The present invention relates to a telephone call system, and more particularly, to a system for controlling a private branch exchange (PBX) so that a call transferred to a mobile phone terminal (for example, a smartphone, a feature phone) is placed on hold. The present invention also relates to a control server configuring a telephone call system and a control method thereof.

In recent years, many companies have installed private branch exchanges (PBXs) that accommodate multiple extension terminals, and are using dial-in services that call a specific extension from outside using a telephone number assigned to each extension. In addition, a call forwarding function is also used to forward incoming calls to a specific extension to a mobile phone, smartphone, etc.

When answering an incoming call from outside, the call may be temporarily put on hold. If the telephone used for the call is a so-called business phone connected to a private branch exchange, a park hold instruction can be issued to the private branch exchange by pressing a park hold button provided in advance on the telephone. However, if a call is transferred to a smartphone via a private branch exchange, the smartphone (telephone application) generally does not have a park hold button, so it cannot be placed on park hold.

Patent Document 1 describes a system that puts a call on hold based on a DTMF signal representing a special hold number transmitted from a mobile phone during a call. It is difficult to say that it is very convenient as it is necessary to dial a number (special hold number) using a keypad.

Patent No. 5480528

An object of the present invention is to enable a mobile phone terminal that is currently on call or on hold via a private branch exchange to easily place the mobile phone on hold.

The telephone call system according to the present invention includes a call connection relay means for relaying a call connection between a calling source telephone and a mobile phone terminal, a park holding means for parking a call from the calling source telephone, and a park holding means using the park holding means. A private branch exchange equipped with a parked call acquisition means for releasing the parked parked call from park hold and connecting the call from the originating telephone that was released from hold to the call between the private branch exchange and the answering telephone terminal. , and request receiving means for receiving a request regarding park reservation transmitted from the mobile phone terminal through a data communication network, and transmitting a control signal in accordance with the request received by the request receiving means to the private branch exchange through the data communication network. The present invention also includes a control server including control means for controlling the park holding means and the parked call acquisition means of the private branch exchange. The originating telephone and the responding telephone terminal may be of any type, such as a smartphone, a mobile telephone, a landline telephone, a business telephone, etc.

The invention also provides a control server that constitutes a telephone call system. The control server according to the present invention includes a call connection relay means for relaying a call connection between a calling source telephone and a mobile phone terminal, a park holding means for parking a call from the calling source telephone, and a park holding means for parking a call from the calling source telephone. A private branch exchange equipped with a parked call acquisition means for releasing the parked call from park hold and connecting the call from the originating telephone that was released from hold to the call between the private branch exchange and the answering telephone terminal. and a request receiving means for receiving a request regarding park reservation transmitted from the mobile phone terminal through the data communication network, and a control signal according to the request received by the request receiving means. control means for transmitting the call to the private branch exchange through the data communication network and controlling the park holding means and the parked call acquisition means of the private branch exchange.

The present invention also provides a method for controlling the operation of the control server described above.

In this specification, a mobile phone terminal means a small information device that can be connected to both a telephone network and a data communication network, and includes a communication device, an input device (touch panel, button), a display device, a microphone, a speaker, and a calculation device. , memory, storage devices, etc. Basic software (OS) and application software are installed in the storage device of a mobile phone terminal, and various functions including telephone functions are realized depending on the installed application software. Mobile phone terminals include smartphones, feature phones, etc.

In one embodiment, the call connection relay means is a call transfer means that transfers an incoming call to an extension terminal, which is called from a calling source telephone, to a mobile telephone terminal through a telephone network. When the telephone number of the mobile phone terminal is associated with the telephone number of the extension terminal as the forwarding destination telephone number, the call connection relay means of the private branch exchange transfers the incoming call to the extension terminal to the mobile phone terminal via the telephone network. The correspondence between the call forwarding destination telephone number and the extension telephone number can be set (stored) in advance in the private branch exchange. Through call transfer, a call connection is established between the originating telephone and the mobile phone terminal via the private branch exchange (call establishment).

In another embodiment, the call connection relay means is a callback means that calls both the originating telephone and the mobile phone terminal in response to a callback origination from the originating telephone. When the private branch exchange places a call to both the originating telephone and the mobile phone terminal, a call connection between the originating telephone and the mobile telephone terminal via the private branch exchange is established.

According to this invention, the processing (function) of park hold and park hold release (parked call acquisition) of the private branch exchange is instructed from the mobile phone terminal. Instructions for park hold and release from park hold (retrieval of parked calls) from a mobile phone terminal are performed through a data communication network (for example, the Internet) rather than a telephone network, so DTMF (Dual-Tone Multi-Frequency) signals are used. There's no need. It is possible to eliminate the need to directly dial a hold number or hold release number using a keypad, and to easily issue instructions for park hold and release by using a mobile phone terminal that is currently on a call or on hold via a private branch exchange. I can do it.

When park hold is performed on a call between the originating telephone and the mobile phone terminal via the private branch exchange, the call between the originating telephone and the private branch exchange is placed on park hold; The call to the terminal is disconnected. A re-call is required to reconnect (retrieve the parked call) with the originating telephone that is on park hold.

In one embodiment, the private branch exchange includes receiving means for receiving responder telephone terminal information identifying the responder telephone terminal, and the responder telephone terminal based on the responder telephone terminal information received by the receiving means. A call between the private branch exchange and the responder telephone terminal is established by the calling means. A call is established between the private branch exchange and the responder's telephone terminal by the private branch exchange making an outgoing (call) call, and the call between the newly established private branch exchange and the responder's telephone terminal is placed on park hold. The parked call is acquired by the answering telephone terminal by connecting the call from the originating telephone (the call between the originating telephone and the private branch exchange) which is restored by being released. Responder telephone terminal information is transmitted, for example, from the above-mentioned mobile phone terminal that instructs park hold to a private branch exchange and received by the receiving means, and the private branch exchange receives the responder telephone terminal information based on the responder telephone terminal information from the mobile telephone terminal. Make a call to the terminal. The responder telephone terminal may be a mobile phone terminal that instructs park hold (self-response), or may be a terminal different from the mobile phone terminal (third-party response).

In another embodiment, the private branch exchange comprises response means for responding to a call from the responder telephone terminal, and a call between the private branch exchange and the responder telephone terminal is established by the response means. A call between the private branch exchange and the responder telephone terminal is established by the responder telephone terminal making an outgoing (call) call, and the call between the newly established private branch exchange and the responder telephone terminal and the park The parked call is acquired by the answering telephone terminal by connecting the call from the originating telephone which is restored when the hold is released.

A request regarding park reservation from a mobile phone terminal is not sent directly from the mobile phone terminal to the private branch exchange, but is sent to the private branch exchange via the control server. That is, a command set for controlling the park hold (including its return (release)) of the private branch exchange is prepared in the control server. Even if private branch exchanges made by various manufacturers exist and have different instruction sets, it is possible to handle them.

The present invention also provides a mobile phone terminal, in particular a mobile phone terminal that can specify a responder phone terminal to receive a parked call. The mobile phone terminal according to the present invention includes a call connection relay means for relaying a call connection between a calling source telephone and the mobile phone terminal, a park holding means for parking a call from the calling source telephone, and a park holding means. A premises equipped with a parked call acquisition means that releases the parked call from park hold and connects the call from the originating telephone that was released from hold with the call between the private branch exchange and the answering telephone terminal. A request receiving means is connected to the exchange through a data communication network and receives a request regarding park reservation transmitted from the mobile phone terminal through the data communication network, and a control signal according to the request received by the request receiving means is transmitted to the data. The response to be transmitted to the private branch exchange through a communication network and connected through a data communication network to a control server comprising control means for controlling the park holding means and the parked call acquisition means of the private branch exchange, and to acquire the parked call. The designated responder telephone terminal includes input means for inputting responder telephone terminal information for specifying a responder telephone terminal, and designated responder transmitting means for transmitting the responder telephone terminal information inputted from the input means to the control server.

The present invention also provides a program suitable for controlling the above mobile phone terminal.

FIG. 1 is a block diagram showing a schematic configuration of a telephone call system. The park reservation management table is shown. It is a flowchart which shows the flow of self-retention processing. It is a flowchart which shows the flow of self-retention processing. It is a flowchart which shows the flow of park reservation processing. Shows the display screen (call screen) of a smartphone. Shows the display screen (hold screen) of a smartphone. The display screen of a smartphone (park number notification screen) is shown. It is a flowchart which shows the flow of parked call acquisition processing. It is a flowchart which shows the flow of parked call acquisition processing. Shows the display screen (calling screen) of a smartphone. The display screen (park list screen) of a smartphone is shown. The display screen of the smartphone (parked call responder designation screen) is shown. Shows the display screen (search screen) of a smartphone. It is a flowchart which shows the flow of parked call acquisition processing. It is a flowchart which shows the flow of parked call acquisition processing. 12 is a flowchart showing the processing flow of a telephone call system according to another embodiment.

FIG. 1 is a block diagram showing a schematic configuration of an intra-company telephone system.

The in-house telephone system 1 includes a private branch exchange (PBX) that can transfer calls from a telephone 11 to a dial-in number (landline telephone) to a smartphone (which may also be a feature phone) 41A. ) 21 and a control server 51 that can control the processing of the PBX 21.

As described in detail below, the PBX 21 has a "call transfer function" that transfers a call addressed to a dial-in number (landline phone) by the originating telephone 11 to the smartphone 41A, and a call transfer function between the originating telephone 11 and the smartphone 41A. A "park hold process" is executed to put the call (speech) on hold. A call placed on park hold (hereinafter referred to as a parked call) can be retrieved using the smartphone 41A that instructed the park hold or a phone other than the smartphone 41A (for example, the smartphone 41B) (release the park hold and make a call). call, answer, and answer the phone).

Referring to FIG. 1, telephone 11, PBX 21, and smartphones 41A and 41B are capable of mutual voice communication through telephone network 2. The telephone 11, the PBX 21, and the smartphones 41A and 41B all have unique telephone numbers (contractor line numbers), and can communicate with each other by inputting the telephone number and making a call. A telephone application program (telephone application) is installed in the smartphones 41A, 41B, and by this telephone application, the smartphones 41A, 41B function as telephones (mobile phones) and operate as described in detail below.

The PBX 21, control server 51, and smartphones 41A and 41B are also capable of mutual data communication via the Internet 3 (which may include or be an intranet). The telephone 11 may also be capable of data communication via the Internet 3.

The Internet can be used for part or all of the telephone network 2 (so-called IP telephone). However, since circuit switching is used for telephone calls (calls) and packet switching is used for data communication, the communication models for voice communication and data communication are different from each other.

The PBX 21 may be a so-called IP-PBX that provides the same functions as a conventional PBX over an IP (Internet Protocol) network, or a so-called cloud PBX that provides PBX functions over the Internet.

The PBX 21 is equipped with a memory (storage medium) 22, and this memory 22 stores extension numbers, dial-in numbers, and forwarding destination numbers for each of a plurality of extension terminals (not shown) connected to (accommodated in) the PBX 21. has been done. FIG. 1 shows configuration data 22A stored in the memory 22 for one extension terminal. , the phone number 090-9876-5432 of the smartphone 41A is set as the forwarding number (stored in the memory 22). An extension call or an outside call with extension number 2010 or dial-in number 03-1234-5678 as the called number is forwarded to the smartphone 41A according to the forwarding destination number set in the setting data 22A. Note that by setting the incoming call transfer to the smartphone 41A, it is not necessarily necessary to connect a physical extension terminal to the PBX 21.

A park reservation management table 22B is also stored in the memory 22 of the PBX 21. FIG. 2 shows the park reservation management table 22B.

The park hold management table 22B contains the park extension number, usage status, and external line for retrieving parked calls for each of the multiple park lines (park slots) (hereinafter sometimes simply referred to as "parks") prepared in advance. number, and the calling party's telephone number (parked party's telephone number) are stored. In this embodiment, for the sake of clarity, it is assumed that five park lines are provided. However, the number of park lines can be set arbitrarily; for example, the number of park lines corresponding to the multiple extension terminals connected (accommodated) to PBX 21 (a dedicated park line for each extension terminal) is prepared. You can also do that.

A unique extension number, here aaa to eee, is assigned in advance to each park line and registered in the park reservation management table 22B.

In the park hold management table 22B, for each park line, whether the park line is in use (on hold) or not in use (vacant state) is managed by, for example, a flag (see FIG. 2 for easy understanding). shown as either ``in use'' or ``free'').

When a park line is in use (on hold), an external line number is assigned to the park line, and the assigned external line number can be used to retrieve parked calls. As will be described later, in this embodiment, parked calls can be acquired based on calls originating from the PBX 21, and can also be acquired based on calls originating from the smartphones 41A, 41B, etc. The "external line number for parked call acquisition" is used when acquiring a parked call based on a call originating from the smartphones 41A, 41B, etc. An external line number for obtaining a parked call is assigned to the park line in use, and the assigned external line number for obtaining a parked call is also registered in the park reservation management table 22B. The external line number for acquiring a parked call is dynamically assigned to the parked line in use (on hold) from among a plurality of external lines prepared in advance. Generally, a smaller number of external line numbers for parked call acquisition are prepared than the number of park lines prepared in advance.

The park hold management table 22B also registers the telephone number of the calling telephone set (calling source telephone number) held on the park line. As will be explained below, in this embodiment, a mode will be described in which a call from the calling phone 11 is put on park hold by using the called destination smartphone 41A, so that the calling phone number is It is registered in the park reservation management table 22B. Note that if park hold is performed using the calling source telephone 11, the called party will be placed on park hold, and in this case, the telephone number of the called destination smartphone 41A is registered in the park hold management table 22B. That will happen.

When the parked call is acquired (the phone is picked up), the usage status of the parked line is switched from "in use" to "free". Further, the external line number for obtaining the parked call and the calling party's telephone number are deleted from the park hold management table 22B.

Returning to FIG. 1, the control server 51 not only controls the processing of the PBX 21, but also provides telephone directory data (contact data) for specifying a response terminal from which a parked call should be obtained, as will be described later. can be provided. This telephone directory data is stored in a storage device 52 included in the control server 51. Details regarding the telephone directory data will be described later.

3A and 3B are flowcharts showing the processing flow of the telephone call system 1 when a call made from the originating telephone 11 to one of the extension terminals (dial-in number) housed in the PBX 21 is placed on hold. be.

When a call is made to the dial-in number of a specific extension terminal housed in the PBX 21 using the calling telephone 11 (step 61), the call is received at the PBX 21 via the telephone network 2. The originating telephone 11 notifies the PBX 21 of the originating number (the telephone number of the originating telephone 11) and the called number (dial-in number) through the telephone network 2.

As mentioned above, the memory 22 of the PBX 21 stores setting data 22A in which an extension number, a dial-in number, and a forwarding destination number are registered in association with each other. Incoming call transfer processing is performed for the transfer destination number registered in the setting data 22A in association with the incoming call number). Assuming that the telephone number of the smartphone 41A is stored in the memory 22 of the PBX 21 as a forwarding destination number in association with the called number, the PBX 21 will forward the incoming call from the originating telephone 11 to the smartphone 41A.

A call from the originating telephone 11 via the PBX 21 is received at the smartphone 41A (step 62). The phone app launches and alerts you to an incoming call with sound, light, vibration, etc. When the called party (the owner of the smartphone 41A) goes off-hook (picks up the phone) (step 63), the PBX 21 performs the connection process. A call connection S1, T1 is established between the originating telephone 11 and the smartphone 41A via the telephone network 2 and the PBX 21 (call establishment). The call connections S1 and T1 are established by relaying (connecting) the call connection S1 between the originating telephone 11 and the PBX 21 and the call connection T1 between the PBX 21 and the smartphone 41A at the PBX 21.

FIG. 4 shows a call screen 41α displayed on the display screen of the smartphone 41A when the call connection S1, T1 is established between the originating telephone 11 (phone number: 03-5555-6666) and the smartphone 41A. ing.

The call screen 41α of the smartphone 41A includes a calling number (phone number of the calling phone 11) 41a, a face image 41b of the caller associated with the calling number and stored in the memory of the smartphone 41A, and a company name and name 41c. is displayed.

If the smartphone 41A is notified of a phone number unique to the PBX 21 rather than a phone number unique to the calling phone 11 via the PBX 21, the control server 51 connected to the Internet 3 sends the phone number to the calling phone 11. The telephone number (calling number) 41a of is transmitted to the smartphone 41A, and based on this, the telephone number of the originating telephone 11 can be notified to the smartphone 41A. In addition to the telephone number 41a of the originating telephone 11, data representing the caller's facial image 41b and company name and name 41c associated with the telephone number 41a of the originating telephone 11 are also transmitted from the control server 51 to the smartphone. 41A (the telephone directory data in the storage device 52 is used); in this case, it is not necessarily necessary to store the sender's face image 41b and company name and name 41c in the memory of the smartphone 41A. do not have. In any case, when the control server 51 is used as described above, the PBX 21 notifies not only the smartphone 41A but also the control server 51 of the calling number and called number.

The call screen 41α further displays a self-hold button 41e and a park hold button 41f. The self-hold button 41e and the park hold button 41f may appear on the call screen 41α when, for example, a menu button (not shown) is tapped.

The self-hold button 41e is used by a called party using the smartphone 41A to put the call on hold. The self-held call can be acquired (resume the call) using the smartphone 41A that has instructed the self-holding. The park hold button 41f is used by a called party who is making a call using the smartphone 41A to park the call in progress. As will be described later, a parked call (parked call) can be acquired using another smartphone 41B or the like in addition to the smartphone 41A that instructed the parking (details will be described later).

Returning to FIG. 3A, when the self-hold button 41e on the call screen 41α is tapped (step 65), a self-hold request is sent from the smartphone 41A to the control server 51 via the Internet 3. In response to the self-holding request, the control server 51 sends a self-holding command to the PBX 21 via the Internet 3 in order to control the PBX 21 in accordance with the received self-holding request. The self-holding request and self-holding command include the telephone number of the originating telephone 11 and the telephone number of the smartphone 41A in order to identify the call connections S1 and T1. The self-hold request may include a device ID instead of the telephone number. In this case, the control server 51 that has received the device ID transmits the telephone number associated with the received device ID to the PBX 21 using the telephone directory data stored in the storage device 52.

Referring to FIG. 3B, the PBX 21 that has received the self-holding command executes the self-holding process for the call connections S1 and T1 specified by the self-holding command (step 66), and connects the originating telephone 11 and the PBX 21. Put call connection S1 on self-hold S2. Self-hold S2 is a state in which the call connection state between the originating telephone 11 and the PBX 21 is maintained while the voice from the originating telephone 11 and the voice from the smartphone 41A are cut off. Note that the call connection T1 between the PBX 21 and the smartphone 41A is maintained as is.

The PBX 21 may transmit to the caller's telephone 11 through the telephone network 2 audio that informs the caller that the call is on hold, such as hold voice or hold music.

The PBX 21 transmits to the control server 51 via the Internet 3 that the call between the PBX 21 and the originating telephone 11 has been switched to self-hold S2 (step 67). The control server 51, which has received the data indicating that the screen has been switched to self-hold S2, transmits a hold screen transition instruction to the smartphone 41A. The screen of the smartphone 41A is switched to a hold screen (step 68).

FIG. 5 shows the display screen (hold screen 41β) of the smartphone 41A after receiving the hold screen transition instruction from the control server 51. On the hold screen 41β, the self-hold button 41e displayed on the above-mentioned call screen 41α disappears, and a new self-hold release button 41g appears in its place.

Although the detailed process flow is omitted, when the self-hold release button 41g on the hold screen 41β is tapped, the call between the PBX 21 and the originating telephone 11 is returned from the self-hold S2 to the call connection S1, and the PBX 21 The call connection S1, T1 between the originating telephone 11 and the smartphone 41A is restored. Similar to the self-holding process described above, a hold release request is sent from the smartphone 41A to the control server 51, and a hold release command in accordance with the hold release request is sent from the control server 51 to the PBX 21, so that the hold release process is performed in the PBX 21. executed. The hold release request and hold release command include the telephone number of the originating telephone 11, etc. in order to specify the self-held line to be released from hold. The PBX 21 also stops the audio being sent to the originating telephone 11 and sends an instruction to change to the normal screen to the smartphone 41A. The screen of the smartphone 41A switches again from the hold screen 41β (FIG. 5) to the call screen 41α (FIG. 4).

FIG. 3C shows processing when the park hold button 41f on the call screen 41α (FIG. 4) or the hold screen 41β (FIG. 5) is tapped. The park hold button 41f can be tapped whether the call is in progress (FIG. 4) or when the call is on hold (FIG. 5).

When the park hold button 41f is tapped (step 69), a park hold request is sent from the smartphone 41A to the control server 51 via the Internet 3, and a park hold command in accordance with the park hold request is sent from the control server 51 to the PBX 21 via the Internet 3. be done. The park hold request and park hold command include the telephone number of the originating telephone 11, etc. in order to specify the call connection S1, T1 (or self-hold S2).

Upon receiving the park hold command, the PBX 21 executes the park hold process for the call connections S1, T1 (or self-hold S2) specified by the park hold command (step 70), and parks between the originating telephone 11 and the PBX 21. Set to hold S3. Like self-hold S2, park hold S3 is also a state in which the call connection state between caller telephone 11 and PBX 21 is maintained, while audio from caller telephone 11 and voice from smartphone 41A are cut off. The held voice may be transmitted from the PBX 21 to the originating telephone 11.

Unlike when the self-hold button 41e is tapped, when the park hold button 41f is tapped (when a park hold command is received by the PBX 21), the PBX 21 stores the park hold management table 22B ( (see Figure 2) and secure (reserve) one of the vacant park lines. The telephone number of the originating telephone 11 received from the control server 51 is registered in the originating telephone number column of the park reservation management table 22B for the reserved park line. In addition, one of the plurality of external numbers prepared in advance (currently unused) is assigned and registered in the external line number field for parked call acquisition of the secured park line. Furthermore, the flag indicating the usage status is switched from "vacant" to "in use."

When the park line is successfully secured, the extension number of the park line and the assigned external line number for retrieving the parked call are sent from the PBX 21 to the smartphone 41A via the control server 51 via the Internet 3, and are displayed on the smartphone 41A. displayed on the screen (step 71).

FIG. 6 shows a park number notification screen 41γ displayed on the smartphone 41A.

On the park number notification screen 41γ, the extension number of the park line transmitted from the PBX 21 as described above and the assigned external line number for obtaining the parked call are displayed for a predetermined period of time, for example, several seconds. The park extension number and the parked call acquisition external line number may be used in the process described below, and if necessary, they can be copied by tapping or the like.

Returning to FIG. 3C, the PBX 21 disconnects the call connection T1 that was established between the PBX 21 and the smartphone 41A that requested park hold (call disconnection T2), thereby causing the smartphone 41A to exit the call. In this way, park hold differs from the self-hold process (FIG. 3B) in which the call connection T1 between the PBX 21 and the smartphone 41A is maintained as it is in that the smartphone 41A that has instructed park hold exits the call.

If all the park lines prepared in advance are in use, it is not possible to put the park on hold until a space becomes available. In this case, for example, the PBX 21 may notify the smartphone 41A of this via the control server 51. Regardless of whether the park hold is executed during a call or when the caller is on self-hold, the smartphone 41A and the originating telephone 11 will return to the self-hold state (FIG. 5).

FIGS. 7A and 7B are flowcharts showing the process flow of the telephone call system 1 when acquiring a parked call (release the park hold and make a call). 8 to 11 show the display screens of the smartphone 41A that are displayed when acquiring a parked call.

As described above, parked calls can be acquired based on calls originating from the PBX 21, and can also be acquired based on calls originating from the smartphones 41A, 41B, etc. FIGS. 7A and 7B show processing when a parked call is acquired based on a call originating from the PBX 21.

Referring to FIG. 8, FIG. 8 shows an outgoing call screen 41δ that is displayed when the telephone application is started on the smartphone of the in-house call system 1 (here, the smartphone 41A that requested the park hold).

The call screen 41δ includes a telephone number input field 41h, a numeric keypad 41j, a dial call button 41m, a park list button 41l, a history button 41k, and a telephone directory button 41i.

When a telephone number is input using the numeric keypad 41j, the telephone number is displayed in the telephone number input field 41h. When the dial button 41m is tapped, a call is made to the phone number displayed in the phone number input field 41h. The telephone number entered in the telephone number input field 41h can be edited.

When the history button 41k is tapped, the outgoing call history and the incoming call history are displayed (not shown). It is also possible to input the telephone number to be called using the outgoing call history or the incoming call history.

When the telephone directory button 41i is tapped, the telephone directory is displayed (the telephone directory will be described later). A telephone directory can also be used to input the telephone number to be called.

Referring to FIG. 7A, when responding to a parked call on hold, park list button 41l on outgoing call screen 41δ is tapped (step 72). When the park list button 41l is tapped, a park list acquisition request is sent from the smartphone 41A to the control server 51 via the Internet 3, and a park list acquisition command in accordance with the park list acquisition request is sent from the control server 51 to the PBX 21 via the Internet 3. Ru. The park list acquisition request and park list acquisition command include the phone number (or device ID or the like) of the smartphone 41A.

Upon receiving the park list acquisition command, the PBX 21 accesses the above-mentioned park hold management table 22B, and accesses the park extension number of the park line in use (park hold), the external line number for acquiring the parked call, and the calling source telephone number ( The parkee's telephone number) (inclusively referred to as "park usage information") is transmitted to the smartphone 41A (step 73). The display screen of the smartphone 41A is switched to the park list screen 41ε (step 74). Park usage information is transmitted from the PBX 21 to the smartphone 41A via the control server 51.

FIG. 9 shows an example of the park list screen 41ε displayed on the smartphone 41A.

The park list screen 41ε includes a park number input field 41p, a "call back to obtain" button 41q1, a "call the park number to obtain" button 41q2, a parked person information display field 41r, and a close button 41s.

Based on the park use information received from the PBX 21, information on parked persons whose park is on hold is displayed in the parked person information display field 41r of the smartphone 41A. FIG. 9 shows that three park lines are in use (park pending).

As described above, the storage device 52 connected to the control server 51 stores phonebook data (contact data), and the phonebook data stored in the storage device 52 is displayed in the parked person information display field 41r. It can be used to display information about parked persons whose park is on hold. In this case, the phone book data associated with the calling party's phone number (parked person's phone number) included in the park usage information is sent from the control server 51 to the smartphone 41A, and based on this, the park list screen is displayed. In addition to the calling party's telephone number (parked party's telephone number), a face image, company name, and full name can be displayed in the parked party information display field 41r of 41ε. Of course, the face image, company name, and name associated with the calling party's telephone number (parked party's telephone number) may be displayed using the telephone directory data registered in the memory of the smartphone 41A.

The parked person information display field 41r also displays the above-mentioned park extension number (for example, "ddd") and an external line number for obtaining a parked call (for example, "03-dddd-dddd").

When the park extension number part displayed in the parked person information display field 41r is tapped, the tapped park extension number is set in the park number input field 41p. The set park extension number can also be edited. The park extension number copied on the above-mentioned park number notification screen 41γ (FIG. 6) may be pasted into the park number input field 41p. Instead of the park extension number, an external line number for obtaining parked calls may be set (pasted) in the park number input field 41p. By tapping the "Retrieve by callback" button 41q1, the process of acquiring by callback of the parked call specified by the park extension number set in the park number input field 41p or the external line number for retrieving the parked call starts. be done.

If the parked call to be retrieved is, for example, a call from Saburo Suzuki of Patent Co., Ltd. (the calling number is 03-5555-6666), the park extension number ddd associated with Saburo Suzuki is tapped. Ru. The park extension number ddd is set in the park number input field 41p, and by tapping the "Get by callback" button 41q1, the callback acquisition process for Saburo Suzuki's call (parked call) is started.

When the close button 41s is tapped, the screen returns to the previous screen, that is, the calling screen 41δ (FIG. 8).

The park number input field 41p can also be used to directly specify the parked call to be acquired. You can also start the callback acquisition process for the parked call by directly entering the park extension number of the parked call to be acquired in the park number input field 41p and tapping the "Acquire by callback" button 41q1. be able to.

When the "Acquire by callback" button 41q1 is tapped, the display screen of the smartphone 41A displays a parked call responder specification screen 41ζ for specifying the next responder (obtainer) to obtain the parked call. is displayed (step 75).

FIG. 10 shows an example of the parked call responder designation screen 41ζ.

The parked call responder designation screen 41ζ includes an "answer by yourself" button 41t, a responder input field 41u, a response button 41v, a search button 41w, a telephone directory 41x, and a cancel button 41d. When the cancel button 41d is tapped, the screen returns to the park list screen 41ε.

The parked call answerer specification screen 41ζ allows you to specify yourself or a third party who has specified the parked call to be obtained using the park list screen 41ε (Fig. 9) as the answerer who should obtain the parked call. can do.

If the person himself/herself is to be the responder, the "Reply by yourself" button 41t is tapped. The user's own phone number (here, the phone number of the smartphone 41A) is set in the responder input field 41u. At this time, operations (for example, adding a calling prefix) to the telephone number set in the responder input field 41u may be performed according to instructions from any or all of the PBX 21, the control server 51, and the smartphone 41A. The parked call responder designation screen 41ζ is also used to select which telephone number to call when a plurality of telephone numbers are registered in the telephone directory data. The telephone number set in the responder input field 41u can also be edited.

The telephone directory 41x can be used when a third party (including the user himself if his data is included in the telephone directory 41x) is the responder. A scrollable telephone directory 41x is displayed based on telephone directory data stored in a storage device 52 connected to the control server 51. When the face image, department name, and name area displayed in the telephone directory 41x is tapped, the tapped third party's telephone number is set in the responder input field 41u. Similarly to the above, a calling prefix may be added to the set telephone number.

The search button 41w is mainly used when searching for a person because the number of entries in the telephone directory 41x is large. The search button 41w can be used not only for searching for people but also for other purposes (such as narrowing down the search to people with specific roles or abilities). When the search button 41w is tapped, a search screen 41η shown in FIG. 11 is displayed on the display screen of the smartphone 41A. When a name, etc. is entered in the search area 41y provided on the search screen 41η, only the telephone directory data corresponding to the input name, etc. is displayed in the telephone directory field 41x of the search screen 41η (not shown), and the displayed telephone directory By tapping the data, the screen returns to the parked call responder designation screen 41ζ (FIG. 10) in which the tapped third party's telephone number is set in the responder input field 41u.

Instead of the telephone directory data transmitted from the storage device 52 connected to the control server 51, it is also possible to specify the responder using telephone directory data stored in advance in the memory of the smartphone 41A.

Returning to FIG. 7A, the parked call to be acquired is specified on the park list screen 41ε (step 74), and the responder to acquire the parked call is specified on the parked call responder specification screen 41ζ. (Step 75) When the response button 41v on the parked call responder designation screen 41ζ is tapped, the smartphone 41A sends the control server 51 via the Internet 3 the park extension number that specifies the designated parked call and the designated parked call answerer designation screen 41ζ. A parked call acquisition request is sent that includes the telephone number of the responder who is to acquire the parked call.

The control server 51, which has received the parked call acquisition request, transmits to the PBX 21 a command to cancel the allocation of the external line number for acquiring the parked call and a command to make a call to the designated responder's telephone number. Referring to FIG. 7B, based on the command from the control server 51, the PBX 21 cancels the assignment of the external line number for obtaining the parked call (step 76), and makes a call to the designated responder's phone number (step 76). Step 77). Using the parked call responder designation screen 41ζ, a call is made to the telephone terminal of the designated responder.

It is assumed that the smartphone 41B is the designated responder's telephone terminal. The call from the PBX 21 activates the phone application on the smartphone 41B, and the incoming call is notified by sound, light, vibration, etc. (step 78). When the called party (the owner of the smartphone 41B) goes off-hook (picks up the phone) (step 79), a call connection (park acquisition call) P1 is established between the PBX 21 and the smartphone 41B.

A park hold release command for the parked call is transmitted from the control server 51 to the PBX 21. The park hold S3 is released, and the call connection S1 between the PBX 21 and the originating telephone 11 is restored. Finally, the control server 51 transmits to the PBX 21 a relay command for the call connection P1 established between the PBX 21 and the smartphone 41B, and the call connection S1 between the recovered PBX 21 and the originating telephone 11. Call connections P1 and S1 via the PBX 21 are established (call establishment). A call is made between the originating telephone 11 and the smartphone 41B.

If the "Answer by yourself" button 41t is tapped on the parked call responder designation screen 41ζ (FIG. 10), the PBX 21 calls the smartphone 41A. A call connection P1 is established between the PBX 21 and the smartphone 41A, and a call is made again between the originating telephone 11 and the smartphone 41A through the call connections S1 and P1 via the PBX 21.

Self-hold command (Figure 3A) to control the PBX 21, Park hold command (Figure 3C), List acquisition command (Figure 7A), Command to acquire parked calls (Deallocation command of external line number for parked call acquisition, etc.) The call command to the designated responder) (Fig. 7A), the command to release the parked call from hold (Fig. 7B), and the relay command (Fig. 7B) are not sent directly from the smartphone 41A to the PBX 21, but are sent via control. It is sent to the PBX 21 via the server 51. That is, a command set for controlling the park reservation processing/release processing executed by the PBX 21 is prepared in the control server 51. There are PBXs 21 made by various manufacturers, and even if the instruction sets are different from each other, it is possible to immediately cope with it.

In the embodiments described above (FIGS. 7A and 7B), the PBX 21 makes a call to a designated responder terminal (smartphone 41B), and the responder terminal (smartphone 41B) that receives the call acquires the parked call. ing. On the other hand, in the following embodiments (FIGS. 12A and 12B), parked calls are obtained based on calls (outside line calls) made from smartphones 41A, 41B, etc., rather than from the PBX 21. Here, it is assumed that a smartphone 41B is used.

Referring to FIG. 12A, when park list button 41l on call screen 41δ (FIG. 8) is tapped (step 72), park list screen 41ε (FIG. 9) is displayed (step 73, step 74). As explained below, a person attempting to retrieve a parked call may, from any telephone that can make a call to the park extension number associated with the parked call to be retrieved or to the parked call retrieval external number, A park call can be obtained by calling the above-mentioned park extension number or external line number for obtaining parked calls. Further, by operating the park list screen 41ε, it is possible to make a call to the above-mentioned park extension number or external line number for obtaining a parked call.

The parked call acquisition external line number for the parked call to be acquired is set in the park number input field 41p of the park list screen 41ε. By tapping the external line number for parked call acquisition displayed in the parked caller information display field 41r of the park list screen 41ε, the tapped external line number for parked call acquisition will be displayed in the park number input field 41p. is set to The external line number for obtaining a parked call, which was copied on the above-mentioned park number notification screen 41γ (FIG. 6), may be pasted into the park number input field 41p. In any case, if the "Call park number and retrieve" button 41q2 is tapped while the outside line number for retrieving a parked call is set in the park number input field 41p of the park list screen 41ε, the parked call will be retrieved. The smartphone 41B makes a call to the external line number for call acquisition (step 81). At this time, you may call another application that can make a call to make the call. The smartphone 41B sends the telephone number (calling number) of the smartphone 41B and an external line number for acquiring a parked call (terminating number) for the parked call to be acquired. If it is possible to make a call to the park extension number (such as when using a so-called FMC service), the park extension number can be used instead of the above-mentioned external number for obtaining parked calls.

PBX 21 responds to the call originating from smartphone 41B (step 82). Specifically, the PBX 21 that receives an incoming call addressed to the external line number or park extension number for retrieving the parked call routes the incoming external line to the park line (processing to connect the external line to the extension), and processes the external line number for retrieving the parked call. Executes deallocation processing and response processing (processing equivalent to off-hook).

Referring to FIG. 12B, call connection P1 is established between PBX 21 and smartphone 41B by PBX 21 responding to a call from smartphone 41B to an external line number for obtaining a parked call (parked call acquisition). After that, the park hold S3 is released and the call connection S1 between the PBX 21 and the originating telephone 11 is restored, and the restored call connection S1 and the established call connection P1 are relayed by the PBX 21. Call connections P1 and S1 are established (call establishment). A call is made between the originating telephone 11 and the smartphone 41B.

In the embodiment described above, a call from the originating telephone 11 is forwarded to the smartphone 41A via the PBX 21, and thereby a call connection S1, T1 is established between the originating telephone 11 and the smartphone 41A via the PBX 21. has been established (Fig. 3A). The call connection S1, T1 between the originating telephone 11 and the smartphone 41A via the PBX 21 may be established by a callback instead of by call transfer.

FIG. 13 is a flowchart in the case of establishing a call connection S1, T1 via the PBX 21 between the originating telephone 11 and the smartphone 41A by callback.

A callback is made from the originating telephone 11 (step 61A). The telephone number of the originating telephone 11 (which may be a device ID or the like) and the telephone number of the smartphone 41A are notified to the PBX 21 via the Internet 3. The telephone number of the originating telephone 11 and the telephone number of the smartphone 41A may be notified directly to the PBX 21 from the originating telephone 11, or may be notified to the PBX 21 via the control server 51.

The PBX 21 that received the callback call executes the callback (step 91). That is, the PBX 21 makes a call (callback) to the originating telephone 11 that made the callback call via the telephone network 2.

The callback from PBX 21 is received at originating telephone 11 (step 92). When the calling telephone 11 is off-hook (step 93), the PBX 21 then calls the smartphone 41A through the telephone network 2 (step 94). When making a call from the smartphone 41A, the telephone number of the smartphone 41A notified from the originating telephone 11 via the Internet 3 is used.

When a call from the PBX 21 is received at the smartphone 41A (step 62) and the called party goes off-hook (step 63), a call connection S1, T1 via the PBX 21 is established between the originating telephone 11 and the smartphone 41A. (call established).

1 Call system 2 Telephone network 3 Internet
11 Telephone
21 Private branch exchange
22 Memory
41A, 41B Smartphone (mobile phone terminal)
51 Control server

Claims (10)

A call connection relay means for relaying a call connection between the originating telephone and the mobile phone terminal, a park holding means for placing the call from the originating telephone on park hold, and a parked call placed on park hold by the park holding means. a private branch exchange comprising parked call acquisition means for canceling the park hold and connecting the call from the originating telephone whose hold has been released and the call between the private branch exchange and the answering telephone terminal;
Request receiving means for receiving a request regarding park hold transmitted from the mobile phone terminal through a data communication network in accordance with a park hold instruction from the mobile phone terminal which is in call or on self-hold , and the request received by the request receiving means. a control server comprising control means for transmitting a control signal in accordance with the above to the private branch exchange through the data communication network and controlling the park holding means and parked call acquisition means of the private branch exchange;
Equipped with a telephone call system. The above call connection relay means is
An incoming call transfer means that transfers an incoming call from the originating telephone to an extension terminal via the telephone network to a mobile phone terminal.
The telephone call system according to claim 1. The above call connection relay means is
callback means for calling both the source phone and the mobile phone terminal in response to a callback call from the source phone;
The telephone call system according to claim 1. The above private branch exchange is
a receiving means for receiving responder telephone terminal information identifying the responder telephone terminal; and a calling means for making a call to the responder telephone terminal based on the responder telephone terminal information received by the receiving means,
a call between the private branch exchange and the responder telephone terminal is established by the calling means;
A telephone call system according to any one of claims 1 to 3. The above receiving means is
receiving the above-mentioned responder telephone terminal information transmitted from the above-mentioned mobile telephone terminal;
The telephone call system according to claim 4. The above private branch exchange is
comprising a response means for responding to a call from the above-mentioned responder telephone terminal;
a call between the private branch exchange and the answering telephone terminal is established by the answering means;
A telephone call system according to any one of claims 1 to 3. A call connection relay means for relaying a call connection between the originating telephone and the mobile phone terminal, a park holding means for placing the call from the originating telephone on park hold, and a parked call placed on park hold by the park holding means. Connected through a data communications network to a private branch exchange equipped with parked call acquisition means for canceling park hold and connecting the call from the originating telephone that was released from hold and the call between the private branch exchange and the answering telephone terminal. a control server,
Request receiving means for receiving a request regarding park hold transmitted from the mobile phone terminal through a data communication network in accordance with a park hold instruction from the mobile phone terminal which is in call or on self-hold , and the request received by the request receiving means. control means for transmitting a control signal in accordance with the above to the private branch exchange through the data communication network, and controlling the park holding means and the parked call acquisition means of the private branch exchange;
Control server. A call connection relay means for relaying a call connection between the originating telephone and the mobile telephone terminal, a park holding means for placing the call from the originating telephone on park hold, and a parked call placed on park hold by the park holding means. Connected through a data communication network to a private branch exchange equipped with parked call acquisition means for canceling park hold and connecting the call from the originating telephone that was released from hold and the call between the private branch exchange and the answering telephone terminal. A method for controlling the operation of a control server, comprising:
The request receiving means receives a request regarding park hold transmitted from the mobile phone terminal through a data communication network in accordance with a park hold instruction from the mobile phone terminal which is in call or is on self-hold ;
The control means transmits a control signal according to the request to the private branch exchange through the data communication network, and controls the park holding means and parked call acquisition means of the private branch exchange.
Control server operation control method. A call connection relay means for relaying a call connection between the originating telephone and the mobile phone terminal, a park holding means for placing the call from the originating telephone on park hold, and a parked call placed on park hold by the park holding means. Connected through a data communications network to a private branch exchange equipped with parked call acquisition means for canceling park hold and connecting the call from the originating telephone that was released from hold and the call between the private branch exchange and the answering telephone terminal. , and request receiving means for receiving a request regarding park hold transmitted from the mobile phone terminal through a data communication network in accordance with a park hold instruction from the mobile phone terminal which is in a call or is on self-hold, and the request receiving means receives the request. connected via the data communication network to a control server comprising control means for transmitting a control signal in accordance with the requested request to the private branch exchange through the data communication network, and controlling park holding means and parked call acquisition means of the private branch exchange;
an input means for inputting responder telephone terminal information that specifies the responder telephone terminal that should acquire the parked call; and designated responder transmission for transmitting the responder telephone terminal information input from the input means to the control server. means,
A mobile phone terminal equipped with A call connection relay means for relaying a call connection between the originating telephone and the mobile phone terminal, a park holding means for placing the call from the originating telephone on park hold, and a parked call placed on park hold by the park holding means. Connected through a data communications network to a private branch exchange equipped with parked call acquisition means for canceling park hold and connecting the call from the originating telephone that was released from hold and the call between the private branch exchange and the answering telephone terminal. , and request receiving means for receiving a request regarding park hold transmitted from the mobile phone terminal through a data communication network in accordance with a park hold instruction from the mobile phone terminal which is in a call or is on self-hold, and the request receiving means receives the request. transmitting a control signal in accordance with the requested request to the private branch exchange through the data communication network, and controlling the park holding means and the parked call acquisition means of the private branch exchange to a control server connected to the mobile phone through the data communication network; A program that controls a terminal,
accepts input of responder telephone terminal information specifying the responder telephone terminal that should acquire the parked call;
controlling the mobile phone terminal to transmit the received responder phone terminal information to the control server;
program.

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